JRC | JLN-205

The JLN-205Mk2 is a stable and highly accurate measurement tool to ensure stable speed data utilizing high frequencies ultrasonic waves.The JRC MID incorporates many display modes readily available on a highly visible 4.5-inch LCD display. Besides the display being fully dimmable and having backlit keys, it features dual LED backlight (white and orange), making it easy to operate in various light settings on the bridge.

JRC | JLN-550

The JLN-550 Doppler sonar is designed to provide stable speed information with high stability in dual frequency mode. The lower ultrasonic frequency measures the ground speed (up to large depths) and the higher ultrasonic frequency calculates the ship’s speed against water with a minimized effect of aeration, allowing for stable and accurate operation. An ultrasonic beam is transmitted in fore and aft directions. At the same time, the hull motions such as rolling and pitching are detected and removed by simply measuring the difference of the Doppler shift reception signal, ensuring accurate and stable speed data, even in the roughest conditions.The transducer allows for dual frequency transmission, but the size is still smaller than conventional models, enabled to install on the bow, a suitable location that has the slightest amount of influence to bubbles, which allows for stable and accurate operation.